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Single-atom photo-catalysts:Synthesis,characterization,and applications

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Nano Materials Science 2024年第3期6卷 284-304页

作者： Siqi Li Ziwang Kan He Wang Jiaxiao Bai Yunyi Liu Song Liu yingjie Wu College of Chemistry Chemical Engineering and Resource UtilizationNortheast Forestry UniversityHarbin150040China School of Medicine and Health Harbin Institute of TechnologyHarbin150001China

Single-atom catalysts(SACs)are gaining popularity in catalytic reactions due to their nearly 100%atomic utilization and defined active sites,which provide great convenience for studying the catalytic mechanism of ***,SACs still present challenges such as complex formation processes,low loading and easy agglomeration of ***,we systematically discuss the synthesis methods for SACs,including coprecipitation,impregnation,atomic layer deposition,pyrolysis and Anti-Ostwald ripening *** techniques for characterizing single-atom catalysts(SACs)are described in *** utilization of individual atoms in various photocatalytic reactions and their mechanisms of action in different reactions are *** purpose of this review is to introduce single-atom synthesis methods,characterization techniques,specific catalytic action and their applications in the direction of photocatalysis,and to provide a reference for the industrialization of photocatalytic single-atoms,which is currently impossible,in the hope of promoting further development of photocatalytic single-atoms.

关键词： Photocatalysis Single atom Catalytic mechanism

Efficacy and safety of Weichang’an pill(胃肠安丸)combined with Western Medicine on gastrointestinal diseases:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2023年第6期43卷 1057-1067页

作者： WANG Jiabao ZHANG Lishuang NIU Baihan YU Yajun YANG Fengwen MIAO Lin CHAI Lijuan DING Xinya sun yingjie WANG Yujing WANG Lin ZHANG Han WANG Yi LI Lin Institute of Traditional Chinese Medicine Key Laboratory of Pharmacology of Traditional Chinese Medical FormulaeState Key Laboratory of Component-based Chinese MedicineTianjin University of Traditional Chinese MedicineTianjin 301617China Department of Cardiology Tianjin Binhai New Area Hospital of Traditional Chinese MedicineTianjin 300451China Scientific Research Department the First Affiliated Hospital of Henan University of Chinese MedicineZhengzhou 450000China Tianjin Zhongxin Pharmaceutical Group Co. Ltd.Lerentang Pharmaceutical FactoryTianjin 413204China

OBJECTIVE:To systematically evaluate the efficacy and safety of Weichang’an pill(胃肠安丸,WCA)combined with Western Medicine(WM)for the treatment of gastrointestinal ***:Eight databases,including China National Knowledge Infrastructure Database,Wanfang Data,China Science and Technology Journal Database,SinoMed,PubMed,Web of Science,Cochrane Library,and Embase,were searched for randomized controlled trials(RCTs)of WCA from inception to 30 September *** independently screened the literature,extracted data,and then evaluated the bias risk,effectiveness,safety,and other indicators of the included ***:A total of 33 RCTs were included in this study with 3368 *** analysis,it was found that WCA combined with WM could effectively prevent and treat antibiotic-associated gastrointestinal reaction,functional dyspepsia(FD),irritable bowel syndrome,rotavirus diarrhea(RVD),and ulcerative colitis(UC);no serious adverse reactions ***,compared with the control group,the experimental group showed significantly improved symptoms and some biochemical ***:WCA combined with WM for the treatment of gastrointestinal diseases had better clinical efficacy than the control group,without serious adverse ***,in the treatment of FD,RVD,and UC,WCA improved clinical symptoms and biochemical indicator ***,owing to the restricted quality and quantity of the literature,the results need to be further studied using high-quality RCTs.

关键词： gastrointestinal disease integrative medicine Meta-analysis systematic review Weichang’an pill

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VLBI with SKA:Possible Arrays and Astrometric Science

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Research in Astronomy and Astrophysics 2024年第7期24卷 1-33页

作者： yingjie Li Ye Xu Jingjing Li Shuaibo Bian Zehao Lin Chaojie Hao Dejian Liu Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Science and Technology of China Hefei 230026China

The next generation of very long baseline interferometry(VLBI)is stepping into the era of microarcsecond(μas)astronomy,and pushing astronomy,especially astrometry,to new *** with the Square Kilometre Array(SKA),SKA-VLBI,will increase current sensitivity by an order of magnitude,and reach astrometric precision routinely below 10μas,even challenging 1μ*** advancement allows precise parallax and proper motion measurements of various celestial *** improvements can be used to study objects(including isolated objects,and binary or multiple systems)in different stellar stages(such as star formation,main-sequence stars,asymptotic giant branch stars,pulsars,black holes,white dwarfs,etc.),unveil the structure and evolution of complex systems(such as the Milky Way),benchmark the international celestial reference frame,and reveal cosmic ***,the theory of general relativity can also be tested with SKA-VLBI using precise measurements of light deflection under the gravitational fields of different solar system objects and the perihelion precession of solar system objects.

关键词： astrometry-parallaxes-stars kinematics and dynamics-ISM kinematics and dynamics-Galaxy kinematics and dynamics-galaxies kinematics and dynamics-gravitation

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竞争对红松树木的干旱适应性及生长衰退影响

北京林业大学学报 2022年第6期44卷 1-9页

作者：阎弘孙滢洁刘滨辉东北林业大学林学院黑龙江哈尔滨150040

【目的】揭示竞争是否对红松干旱适应性及生长衰退存在影响,为森林管理提供科学依据。【方法】在小兴安岭南部天然林中取样,通过树木年轮学方法分析比较不同竞争强度的红松径向生长变化率和树木生长对极端干旱的适应性,采用的指标包括... 详细信息

【目的】揭示竞争是否对红松干旱适应性及生长衰退存在影响,为森林管理提供科学依据。【方法】在小兴安岭南部天然林中取样,通过树木年轮学方法分析比较不同竞争强度的红松径向生长变化率和树木生长对极端干旱的适应性,采用的指标包括抵抗力(R_(t))、恢复力(R_(c))和恢复弹力(R_(s))。【结果】小兴安岭南部地区红松树轮宽度指数和树木径向生长变化率反映出在1980-1990年、1990-2000年、2002-2017年期间树木发生了不同程度的生长衰退;不同竞争强度的红松发生生长衰退时间和强度存在差异,中、低竞争强度红松发生生长衰退的时间相对一致,在1990-2000年快速升温期间,高竞争强度的红松没有出现生长衰退,而低竞争强度的红松生长衰退最为严重,最低值达-40.28%;3组不同竞争强度的红松标准年表与上年6月至当年8月的帕尔默干旱指数(PDSI)基本呈正相关关系,高竞争指数组在上年9月至当年2月均达到显著水平(P <0.05)。高竞争强度的红松对干旱的抵抗力和恢复弹力较弱,尤其在严重干旱年,竞争加剧了树木对干旱的敏感性,竞争指数越高(竞争压力越大)的红松对干旱的抵抗力和恢复弹力越弱;不同竞争强度下的红松对极端干旱的恢复力在2000年前快速升温期间均呈下降趋势,2000年左右伴随着升温减缓红松对干旱的恢复力出现反弹。【结论】未来极端干旱事件频率增加,红松可能面临更加严重的生长衰退。竞争影响树木对干旱的适应能力,高竞争强度下的树木对干旱更加敏感,适应能力更弱,但没有导致更加严重的生长衰退。进一步研究还需要结合时间和空间尺度上的深入分析,以应对气候变暖带来的不利影响。加强树木对干旱响应的相关研究,对森林管理与资源保护具有重要意义。

关键词：树木年轮生长衰退适应性干旱气候变暖红松

Parallelogram 3d-4f-5d heterometallic clusters based on trilacunary tungstoantimonates with excellent proton conductivity

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Chinese Chemical Letters 2024年第3期35卷 528-531页

作者： Haiying Wang Han Xu Chaolong Chen yingjie Zhu Yikang Zhang Dongdi Zhang Jingyang Niu Henan Key Laboratory of Polyoxometalate Chemistry College of Chemistry and Molecular SciencesHenan UniversityKaifeng 475004China School of Pharmaceutical Science&Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical UniversityKunming 650500China Collaborative Innovation Center of Chemistry for Energy Materials State Key Laboratory of Physical Chemistry of Solid Surface and Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China

Two 3d-4f-5d heterometallic cluster-containing polyoxometalates,formulated as Na_(22){(SbW_(9)O_(33))_(4)[La_(3)W_(6)MO_(18)(H_(2)O)_(8)(CH_(3)COO)_(4)]_(2)}·nH_(2)O(abbreviated as La_(6)M_(2),M=Co/Mn)were synthesized and structurally ***-crystal X-ray diffraction analyses reveal that the polyanions of La_(6)Co_(2)and La_(6)Mn_(2)consist of the uncommon 3d-4f-5d clusters{La_(6)W_(12)Co_(2)}and{La_(6)W_(12)Mn_(2)},which are encapsulated by four trilacunary Keggin tungstoantimonates to form the parallelogram-shaped title ***,the polyanions can be extended into a two-dimensional(2D)frame by the linkage of peripheral Na+*** inner space of the 2D layer was filled with water molecules and thus an H-bonded network was formed,which is expected to exhibit a fascinating proton *** study of water-assisted proton conduction demonstrated that La_(6)Co_(2)and La_(6)Mn_(2)were temperature-and humiditydependent proton conductors,respectively,and the proton conductivities could reach 1.3×10^(-2)and 2.3×10^(-2)S/cm at 65℃and 90%RH conditions.

关键词： Polyoxometalate Parallelogram Heterometallic 3d-4f-5d cluster Proton conductivity

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提高初中物理实验实施质量的几点思考

物理教学 2023年第1期45卷 29-31页

作者：孙英杰周勇黑龙江教师发展学院黑龙江150080

提升演示实验、分组实验和课外实验实施质量,是提高实验教学质量的主渠道。演示实验应聚焦和瞄准教学目标,预设合理的实验环节,选用贴近生活的实验器材,以破解教学重点和难点,激发学生学习兴趣。分组实验要以实验目的为导向,科学设计实... 详细信息

提升演示实验、分组实验和课外实验实施质量,是提高实验教学质量的主渠道。演示实验应聚焦和瞄准教学目标,预设合理的实验环节,选用贴近生活的实验器材,以破解教学重点和难点,激发学生学习兴趣。分组实验要以实验目的为导向,科学设计实验方案,关注实验操作规范,做好实验过程的展示交流,以发展学生的科学思维。课外实验应重点关注家校合作,构建良好学习氛围,强化小组合作学习意识。

关键词：初中物理实验实验教学实施科学思维

普惠金融对中国产业就业的影响效应——基于总量和结构视角

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证券市场导报 2019年第6期 13-19,30页

作者：林春孙英杰康宽辽宁大学经济学院

选取我国2005~2017年31个省(市、自治区)的面板数据,采用动态面板模型,测算普惠金融对产业就业的影响。结果发现:(1)在基准回归分析中,从总量效应来看,普惠金融对产业就业总量存在显著的促进作用;从结构效应来看,普惠金融对第一产业就... 详细信息

选取我国2005~2017年31个省(市、自治区)的面板数据,采用动态面板模型,测算普惠金融对产业就业的影响。结果发现:(1)在基准回归分析中,从总量效应来看,普惠金融对产业就业总量存在显著的促进作用;从结构效应来看,普惠金融对第一产业就业存在显著的抑制作用,而对第二、三产业就业存在显著的促进作用。(2)在进一步分析中,普惠金融对产业就业的影响表现为地区异质性。其中,东、中部地区普惠金融对第一产业就业存在显著的抑制作用,而对第二、三产业就业存在显著的促进作用;西部地区普惠金融对第一、二产业就业存在显著的抑制作用,而对第三产业就业存在显著的促进作用。

关键词：普惠金融产业结构就业就业结构

中国普惠金融的区域差异与极化趋势：2005—2016

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国际金融研究 2019年第8期 3-13页

作者：林春康宽孙英杰辽宁大学经济学院

本文立足于普惠金融发展的内涵,进一步完善中国省际普惠金融指标体系并进行测度。在此基础上,分别采用基尼系数和DER指数研究东中西三大区域和八大综合经济区普惠金融发展的差异和极化演变特征,并对指标进行分解。结果表明:我国普惠金... 详细信息

本文立足于普惠金融发展的内涵,进一步完善中国省际普惠金融指标体系并进行测度。在此基础上,分别采用基尼系数和DER指数研究东中西三大区域和八大综合经济区普惠金融发展的差异和极化演变特征,并对指标进行分解。结果表明:我国普惠金融发展的区域差异和极化程度呈下降趋势,不同区域的演进趋势存在异质性;普惠金融发展差异较大的区域在差异增速上相对较低,即不同区域发展的差异程度有趋同态势;普惠金融发展极化程度较大的区域在极化增速上相对较低,即不同区域发展的极化程度有趋同态势;区域之间的差异是总体差异的主要来源;DER指数的变化趋势是由疏离度的变化趋势所引致的。

关键词：普惠金融区域差异基尼系数 DER指数

Divergent responses of runoff to climate change in the upper basins of the Third Pole dominated by westerlies and monsoon

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Science China Earth Sciences 2024年第8期67卷 2592-2614页

作者： Qikai sun Fengge SU He sun State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100101China

The diverse climates,distribution of snow and glaciers,and geographic locations directly affect the runoff response to climate change in the upper basins of the Third *** present,a comprehensive analysis of runoff variations and their distinct responses to climate change in the westerlies-and monsoon-dominated upper basins is still *** study comprehensively analyzed annual runoff variations in westerlies-dominated basins(the upper basins of the Aksu(UAKS),Syr Darya(USRD),Yarkant(UYK),Hotan(UHT),Amu Darya(UAMD),and Indus(UI))and monsoon-dominated basins(the upper basins of the Yangtze(UYA),Yellow(UYE),Lancang(ULC),Nujiang(UNJ),and Yarlung Zangbo(UYZ))of the Third Pole from 1961 *** multi-source meteorological data and large-scale circulation factors,this study investigated the divergent responses of runoff in the upper basins to climate change,and explored the large-scale circulation mechanisms underlying runoff variations in these upper *** results showed that:(1)The annual runoff in the majority of upper basins(except for the UYE and UYZ)exhibited an increasing trend,and the annual runoff in the UAKS,UYK,and UI showed a significant increasing trend from1961 to *** annual runoff in the upper basins of the Third Pole changed abruptly from decreasing to increasing between the 1980s and 2000s,with the exception of the UYE.(2)The runoff in the monsoon-dominated upper basins has been controlled primarily by changes in precipitation over the past 55 *** contrast,the runoff in the westerlies-dominated upper basins exhibited three distinct long-term responses to climate change:temperature-dominated(UYK and UHT),precipitation-dominated(USRD and UAMD),and the combined influence of precipitation and temperature(UAKS and UI).Since the 1960s,the sensitivity of runoff to warm season temperature changes in the most westerlies-dominated upper basins has decreased,while the response of runoff to precipitation changes has intensified.(3)The stud

关键词： Upper basins of the Third Pole Climate change Westerlies and monsoon Runoff variations Large-scale circulation factors

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